My son is in kindergarten (so cant read them on his own yet) but LOVES The Boxcar Children. Our library also has Berenstein Bear Chapter books and Arthur chapter books that he likes to check out and read (2 or 3 chapters at bedtime).

Some others may be Horrible Harry, Jerry Spinelli books (he's the author), A Light in the Attic, Runny Babbit, Falling Up.

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